（数控加工）数控车床编程实例.doc

1．根据零件图样要求、毛坯情况，确定工艺方案及加工路线1）对细长轴类零件，轴心线为工艺基准，用三爪自定心卡盘夹持φ58㎜外圆一头，使工件伸出卡盘175㎜，用顶尖顶持另一头，一次装夹完成粗精加工（注：切断时将顶尖退出）2） 工步顺序① 粗车外圆基本采用阶梯切削路线，粗车φ56㎜、SφS50㎜、φ36㎜、M30㎜各外圆段以及锥长为10㎜的圆锥段，留1㎜的余量② 自右向左精车各外圆面：螺纹段右倒角→切削螺纹段外圆φ30㎜→车锥长10㎜的圆锥→车φ36㎜圆柱段→车φ56㎜圆柱段③ 车5㎜φ26㎜螺纹退刀槽，倒螺纹段左倒角，车锥长10㎜的圆锥以及车5㎜φ34㎜的槽④ 车螺纹⑤ 自右向左粗车R15㎜、R25㎜、Sφ50㎜、R15㎜各圆弧面及30的圆锥面⑥ 自右向左精车R15㎜、R25㎜、Sφ50㎜、R15㎜各圆弧面及30的圆锥面⑦ 切断2．选择机床设备　　根据零件图样要求，选用经济型数控车床即可达到要求故选用CK0630型数控卧式车床3．选择刀具　　根据加工要求，选用三把刀具，T01为粗加工刀，选90外圆车刀，T03为切槽刀，刀宽为3㎜，T05为螺纹刀　　同时把三把刀在自动换刀刀架上安装好，且都对好刀，把它们的刀偏值输入相应的刀具参数中。

4．确定切削用量　　切削用量的具体数值应根据该机床性能、相关的手册并结合实际经验确定，详见加工程序5．确定工件坐标系、对刀点和换刀点　　确定以工件左端面与轴心线的交点O为工件原点，建立XOZ工件坐标系　　采用手动试切对刀方法（操作与上面数控车床的对刀方法相同）把点O作为对刀点换刀点设置在工件坐标系下X70、Z30处6．编写程序（该程序用于CK0630车床）　　按该机床规定的指令代码和程序段格式，把加工零件的全部工艺过程编写成程序清单该工件的加工程序如下： N0010 G59 X0 Z195 N0020 G90 N0030 G92 X70 Z30N0040 M03 S450N0050 M06 T01N0060 G00 X57 Z1 N0070 G01 X57 Z-170 F80N0080 G00 X58 Z1 N0090 G00 X51 Z1N0100 G01 X51 Z-113 F80N0110 G00 X52 Z1 N0120 G91N0130 G81 P3 N0140 G00 X-5 Z0N0150 G01 X0 Z-63 F80N0160 G00 X0 Z63 N0170 G80 N0180 G81 P2N0190 G00 X-3 Z0N0200 G01 X0 Z-25 F80N0210 G00 X0 Z25N0220 G80N0230 G90N0240 G00 X31 Z-25N0250 G01 X37 Z-35 F80 N0260 G00 X37 Z1N0270 G00 X23 Z-72.5 N0280 G00 X26 Z1N0290 G01 X30 Z-2 F60N0300 G01 X30 Z-25 F60 N0310 G01 X36 Z-35 F60 N0320 G01 X36 Z-63 F60N0330 G00 X56 Z-63N0340 G01 X56 Z-170 F60N0350 G28N0360 G29N0370 M06 T03N0380 M03 S400N0390 G00 X31 Z-25 N0400 G01 X26 Z-25 F40N0410 G00 X31 Z-23 N0420 G01 X26 Z-23 F40 N0430 G00 X30 Z-21N0440 G01 X26 Z-23 F40N0450 G00 X36 Z-35N0460 G01 X26 Z-25 F40N0470 G00 X57 Z-113N0480 G01 X34.5 Z-113 F40N0490 G00 X57 Z-111N0500 G01 X34.5 Z-111 F40N0510 G28 N0520 G29N0530 M06 T05N0540 G00 X30 Z2N0550 G91N0560 G33 D30 I27.8 X0.1 P3 Q0N0570 G01 X0 Z1.5N0580 G33 D30 I27.8 X0.1 P3 Q0N0590 G90N0600 G00 X38 Z-45N0610 G03 X32 Z-54 I60 K-54 F40N0620 G02 X42 Z-69 I80 K-54 F40N0630 G03 X42 Z-99 I0 K-84 F40 N0640 G03 X36 Z-108 I64 K-108 F40N0650 G00 X48 Z-113N0660 G01 X56 Z-135.4 F60N0670 G00 X56 Z-113N0680 G00 X40 Z-113N0690 G01 X56 Z-135.4 F60N0700 G00 X50 Z-113N0710 G00 X36 Z-113N0720 G01 X56 Z-108 F60N0730 G00 X36 Z-45N0740 G00 X36 Z-45N0750 M03 S800N0760 G03 X30 Z-54 I60 K-54 F40N0770 G03 X40 Z-69 I80 K-54 F40N0780 G02 X40 Z-99 I0 K-84 F40N0790 G03 X34 Z-108 I64 K-108 F40N0800 G01 X34 Z-113 F40N0810 G01 X56 Z-135.4 F40N0820 G28N0830 G29N0840 M06 T03N0850 M03 S400N0860 G00 X57 Z-168N0870 G01 X0 Z-168 F40N0880 G28N0890 G29N0900 M05N0910 M02。